Pump.



E. SCHLEPFER, FILS GL' L. BLANC.

PUMP.

APFLICATIDN HLED DEC,8. 1915.

Putentd Mar. 5., 1918.

w E: ,157 Hn m i 2 Um um) SLATES PATENT OFFICE.

EDU UARD SCHJA.EPFER, FILS, AND LOUIS BLANC, OF LAUSANNE, SWITZERLAND, ASSIGNURS TO SAID LOUIS BLANC.

PUMP.

.Application filed December S, 1916 of Valid; in the Confedm-ai'ion of fwtav hand,.. i1ave--im onto@ Gemini new and mein] lnprovemeits in and' 'Rohit-ing to Punips, oi' which the following IS 2\ spechcation.

The inventon COnSlStS of certain now and useful IDDTOVCIHGD''S in pumps which muy i be SQI'eWBd to the' said ro& (Z and -in Fig 1. 4

:iir-pumps and the ii ie.

The improvement consists of having; thu. pmton of the pom;) co

acted sa) m pm vide for Smail :xal dis'j iacei'nen ii;\'VF-('*il the same and the -piston vod, means, i empioyed to make the oi' io' weon jh ro and the. piston. tight whenever is moved in one diir o ion and 'io hm the.&anti-amy the fluid (wat cc. air and the like) allowed to flow bo si n e pisten and the ps'tomrod whenew m is %aid rod is moved in the oppozite dire .tion.

In' the accompunyng drawings Figura l is a. section-of a piston constmctod aocom ing to thiginvention, the pitoni-rod being moved in: on direction.

Fig. 2 is a Simiiansection when the piston rod is moved in opposito direction.

Fig. 3 is :in axiai section of a ;:])l`21j7-PU.JE}I in which the invention is appiied and in which the. pisten iilustra'ed is a modifica tion of that shown in F 1 and 2, and Fg. 4: shows'at ai). enlarge suoi@ a pam. of this pump. i i

Referring "Lo Fig. '1, d is "he piston red and 0 the. pisten 'which siicies in pumpoylnder ?1. The endof i od d carries a head. member e of smaller diameter which may which has a head-piece 8 The pisten c is provided ceitirally with a bore of different diametrs and is placed on-;the said head member e the diameter of which-is less than the smaller diameter-of #the bore in the pisten, so that the fluid to be pompa& (Water, co npressed 'air (ir-th& like) may fiow between' the piston and the rod when 'the rod d is moved in the direction shown by the. arrow i 'as shown Thi end-'portion of the (Z :is fim: 'With ;i asher 03 of leather or other' suiiahlo ma.-

Specification of Letters Patet.

'of suitable -st'anoe for the its extremity lyin' Serial No. 135.720'

'and piston \\'hon .\'or thi' -od rol is moved in the direction of tlo arrow 2 (Fiv 2) iVho the pisl'on-'od l in: moved in tim direction, :s indicul'od ly the arrow in Fig. 'L the piston r: is moved by the head w* of thi; pitco a; and :is the said head iS provided with Suitzbie noi'ches on its lower face, these notches ermit the fluid which is; conp'essed by the pisto, to flow bo'wom the i'od and the pis-ton, The pzcking f' of the pisto nmy ba prcssed against the inno' wzils of the cylinder 7) bythe comprvssod fluid by means pns'sages c provided in the pis toni In the costmction shown in Fin 3 Hio ,ist on r; iiii'frz in :in inno' cyiindur b of i ray-pun p ol' noniz i' having ZUL olma- 'yill' (il, co-2xini to :and intended to von in the iiquid io bo 'jir'ziyod The Hliii i guid ia Smoked 'through the pipo 7)? .into the li the pun'p whenever the piraton- :hown in Fig. the con'ipressed iiqnid being oxpeihd through :L 'ozzie for'n'ied of 21 tubuhu: box k, screwed into the *end of the cylineb and of a cup #sm-,Wed on the said tubniar 'bnx 2 The (top k is provided With :1 very sm dl zixiai hol@` 1 and contains 21 11 ohturitiiig inpienent shown Separateh' in 4. This impleneit is notched as si'own in Fig. 4. :it 72, and m and has a cil cumfoirential g'oove 0. The comp'osed liquid ows through the Saiti otahes ;imi groove 'causiig the im tlement l tobe ro ?butoni within ,the (tap ?a and this rotm ion causes the szi i iiquid to be sprayed desiifed When ojozt'ed through the hole k The pisten x'od d is provided With ai annula coiiar d aoting to limit its sh'oke in .the direction of the arrow 1 shown in 'This form of pump may be used for inpurpose of sprinkling flowers With ,Water or for deodorizing purposes.

Claims: i 4

l. In a pump and in cor'bination, a oylinder, a'pistonfitting within the oyiinder and having a centi'al hor-e of different diameters, a pisten rod, a had meniherand of the vpiston I'Od, passing through the, bore of smaller diameter in the pston With within the'bore of larger diameter in i'l lon, and a Washer surromiding the head .embo' and adapte'd to [Eltoni-ed Mar. 5, 1918.

(i d is moved in the direction of the arrow Secured .in the Io l bear against the adjaoent surface of the p..'-

ton to close the bore therethroughwhe the a .pisten rod, a, head member Secured in the V I passing through the here of smaller diameter in the pisten with ts extremity lying within the bore of larger diameter in th ing the head and to he moved away from open a. passagewuy through the bore in the peton `when the same and the pisten. red ere moved in the opposite lireetiom and e packing ring lying within a recess prom' ded therefor .in the periphery of the piston, there being passage-ways maki' g communication the pist-oli to between the bore nthegston and the seid recess in which the packmgring is located to permt the resssure within the ey inder to maintain the pucking against the inner walls of the cylinder.

In testimony whereof We tures in presence of two witnesses.

EDOUARD SCHLAEPFER, FILS. LOUIS BLANC. VVitnesees: t

Tmoeeee TURNER,

our signe- 

